تدريب Shadowing: Why Diamond Prices Are Falling So Fast - تعلم التحدث بالإنجليزية عبر الفيديو
جارٍ إنشاء الدرس...
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The price of natural diamonds has plunged roughly 60 % in five years,
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falling from an all -time high of about $10 ,000 for a one -carat diamond in March 2022.
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The main culprit?
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A boom in lab -grown alternatives.
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Entering the market at a fraction of the cost, man -made diamonds have surged in popularity over the last few years.
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While buyers save thousands of dollars, the shift is changing the fabric of the traditional diamond market and raising questions about the future of the centuries -old industry.
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Lab -grown diamonds are created by placing small diamond seeds into a vacuum chamber with carbon -rich gases.
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Under controlled heat and pressure, the seed grows layer by layer before being cut and polished.
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They look just like natural diamonds and have the same chemical and physical properties, but because they can be produced in unlimited quantities,
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lab -grown stones sell for far less than natural diamonds.
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This price difference has driven an enormous shift in consumer habits.
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In 2026, lab -grown stones, including diamonds, accounted for 61 % of all U .S engagement ring sales.
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That's a 239 % increase since 2020.
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A diamond, it's a carbon, precious stone, scarcity, it's a rare stone.
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Now, this is a product that is produced in a factory.
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There's unlimited supply.
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Retailers have noticed.
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Pandora, a Danish retail jeweler with stores in more than 100 countries, completely stopped using mine diamonds in 2021,
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pivoting exclusively to 100 % lab -grown stones.
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We see today, we understand that around 60 or 70 percent of engagement rings are synthetic diamonds, not natural diamonds.
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Beyond the price tag, lab -grown diamonds have other benefits, too.
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A one -carat lab -grown diamond has a carbon footprint 90 percent lower than a mined diamond of the same size.
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Natural diamonds also carry a complicated history.
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Conflict diamonds mined in war zones once represented about 4 percent of global production.
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The Kimberley process came into force in 2003, an attempt to stop the trade, but there is a catch.
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Lab -grown diamonds might not have the same resale value as a natural diamond does.
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You shouldn't be buying a diamond thinking that there's a financial investment to it.
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And all they write back every single time is that you get no value back on your lab -grown diamond, right?
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All right, well, guess what?
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You know, surprise, you don't get any value back on your natural either.
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To understand how deep this crisis goes, you have to look at where diamonds come from.
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As of 2025, more than 85 % of global diamond mining happens in just five countries.
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Russia, Botswana, Angola, Canada, and the Democratic Republic of Congo.
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Between geopolitical uncertainty, excess inventory of polished diamonds, and higher tariffs on diamond imports from India, the biggest players in the industry are being forced to pivot.
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De Beers Group, a subsidiary of Anglo -American, announced it would pause production at its flagship Phoenicia mine in South Africa for over two years to cut costs
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and streamline operations.
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The diamond company also briefly opened and shut down its very own lab -grown diamond brand.
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Lightbox was launched in 2018 with the plan to price its stones at $800 per carat.
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The business closed seven years later after lab -grown diamond prices fell 90 % at the wholesale level.
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And De Beers isn't alone.
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Russia's state -owned Alrosa, which counts for about 30 % of global diamond production, reported a decline in production between 2023 and 2025.
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So where does that leave the market?
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Have natural diamond prices finally hit rock bottom?
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According to Mano, Rappaport's diamond research shows signs of stabilization.
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I believe and our organization believes that we are around rock bottom and things are starting to shift.
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I think the pricing is extremely fair right now.
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The big thing that consumers see is kids walking around with five carat diamonds right
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and now they're able to do so you know
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and able to afford it and then you know able to take the extra money
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that they didn't spend on the five carrot natural and, you know, put it towards their wedding and buy a house.
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المفردات وملاحظات التحدث لهذا الدرس
هذا الدرس في المحادثة بمستوى B2 مبني على الفيديو “Why Diamond Prices Are Falling So Fast”. أكثر الكلمات تكرارًا في الفيديو: diamond, lab, grown, natural, stone. يحتوي هذا الفيديو على 50 جملة و667 كلمة للتدرب على الترديد. مدة الكلام 4:15. يتكلم المتحدث بسرعة طبيعية، نحو 157 كلمة في الدقيقة، قريبة من المحادثة اليومية. 76% فقط من الكلمات ضمن أكثر 3,000 كلمة شيوعًا في الإنجليزية، فالمفردات صعبة نسبيًا.
أهم المفردات في هذا الفيديو
أصعب 15 كلمة في الفيديو، مع النطق والمعنى:
| الكلمة | النطق | المعنى |
|---|---|---|
| carat اسم | /ˈkæ.ɹət/ | قِيرَاط |
| culprit اسم | /ˈkʌlpɹɪt/ | مُجْرِم, جَانِي |
| jeweler اسم | /ˈd͡ʒuːələ(ɹ)/ | صَائِغ, صَائِغَة |
| resale اسم | /ˈriˌseɪl/ | إِعَادَةُ بَيْع |
| tariff اسم | /ˈtæɹəf/ | تَعَارِيف, تَعْرِفَة |
| footprint اسم | /ˈfʊtpɹɪnt/ | أَثَر قَدَم |
| carrot اسم | /ˈkæɹət/ | جَزَر, جزر |
| flagship اسم | /ˈflæɡʃɪp/ | سَفِينَةُ الْقَائِد, سَفِينَةُ الْقِيَادَة |
| fraction اسم | /ˈfɹæk.ʃən/ | قِطْعَة |
| wholesale اسم | /ˈhoʊlseɪl/ | إِجْمَالِيّ, بِالْجُمْلَةِ |
| pause اسم | /pɔːz/ | تَوَقُّف, وَقْف |
| buyer اسم | /ˈbaɪ.əɹ/ | مُشْتَرِي, مُشْتَرٍ |
| quantity اسم | /ˈkwɑn(t)ɪti/ | كَمِّيَّة, مِقْدَار |
| vacuum اسم | /ˈvæ.kjuːm/ | خَلَاء, فَرَاغ |
| import اسم | /ˈɪm.pɔɹt/ | وَارِدَات |
القواعد في هذا الفيديو
أكثر التراكيب التي يستخدمها المتحدث، مع العبارات نفسها من الفيديو:
| التركيب | في الفيديو |
|---|---|
| المبني للمجهول be + اسم المفعول — التركيز على ما يحدث لا على من يفعله | are created · being cut · can be produced |
| المضارع التام have/has + اسم المفعول — حدث ماضٍ ما زال له أثر الآن | has plunged · have surged · has driven |
نطق يحتاج إلى انتباه
يستخدم المتحدث 5 من الصيغ المختصرة، مثل didn't, don't, isn't. انطقها بصيغتها القصيرة كما تسمعها.
- أصوات “sh” و“zh”: stabilization /ˌsteɪ.bəl.ɪzˈeɪ.ʃən/, flagship /ˈflæɡʃɪp/, fraction /ˈfɹæk.ʃən/
- الكلمات الطويلة — انتبه لموضع النبر: unlimited /ʌnˈlɪm.ɪ.tɪd/, stabilization /ˌsteɪ.bəl.ɪzˈeɪ.ʃən/, subsidiary /sʌbˈsɪ.di.əɹ.i/, uncertainty /ʌnˈsɜːtənti/
كيف تتدرب بهذا الفيديو
- استمع إلى الفيديو كاملًا مرة واحدة دون أن تتكلم، ودوّن الكلمات التي لا تعرفها.
- ابدأ بسرعة 0.75×، وردّد جملة جملة، ثم عُد إلى السرعة العادية عندما يصبح الأمر سهلًا.
- سجّل صوتك وقارنه بالأصل، مع الانتباه إلى كلمات مثل carat, culprit, jeweler.
ما هي تقنية التظليل الصوتي؟
التظليل الصوتي (Shadowing) تقنية تعلم لغة مدعومة علمياً، طُورت أصلاً لتدريب المترجمين الفوريين المحترفين. الطريقة بسيطة لكنها قوية: تستمع لصوت إنجليزي أصلي وتكرره فوراً بصوت عالٍ — كظل يتبع المتحدث بتأخير 1-2 ثانية. تُظهر الأبحاث تحسناً كبيراً في دقة النطق والتنغيم والإيقاع وربط الأصوات والاستماع والطلاقة.